hot sell self drilling screw Head styles:hex ,lange,pan,flat,oval ... :DIN ANSI JIS Surface: ZP,phospha Material:c1022 Product Namehot sell self drilling screwBrand Namesun-alpsStandard ModelDIN ANSI JIS ASTMFINISHBlack,Zinc ... Plated ,HOT GALVANIZED,Cr Cu or Ni PlatedMaterialCarbon Steel,Brass, Stainless steel ...